科创中国

Woodland Mediterranean birds can resist a dry extreme cold wave

原文链接：万方

• 作者：

  Sara VILLEN-PEREZ Luis M. CARRASCAL

• 摘要：

  The?ecological?consequences?of?climate?extreme?events?are?still?poorly?understood,?especially?those?related?to?cold?episodes.?Winter?cold?spells?might?imperil?the?energy?balance?of?small?passerines,?thus?compromising?their?survivorship.?Here?we?analyze?how?the?abundance?and?habitat?use?of?three?tree-gleaning?passerine?species?wintering?in?a?montane?oakwood?of?central?Spain?at?ca.?1,300?m?a.s.1,?was?influenced?by?the?cold?wave?that?hit?Europe?in?February?2012.?We?monitored?temperature,?wind?and?the?relative?abundance?of?great?tit?Parus?major,?blue?tit?Cyanistes?caeruleus?and?long-tailed?tit?Aegithalos?caudatus?in?15?plots?throughout?three?periods:?before,?during?and?after?the?cold?wave.?Our?results?clearly?rule?out?widespread?mortality?and?temporal?migration?of?the?studied?passerine?populations,?as?the?abundance?of?these?species?did?not?diminish?during?the?cold?wave.?Moreover,?the?species?usually?foraging?higher?in?the?tree?canopy?-and?thus?more?exposed?to?windmoved?to?the?less?windy?woodland?plots?(long-tailed?tit)?and?reduced?their?foraging?height?above?ground?during?the?cold?wave?(long-tailed?tit?and?blue?tit),?probably?to?mitigate?the?deleterious?effects?of?wind?chill.?Therefore,?these?forest?birds?were?able?to?cope?with?a?dry?cold?wave?that?was?statistically?extreme?in?terms?of?temperature?and?wind?chill,?according?to?the?historic?climate?records?of?the?region.?It?seems?that,?at?least?when?foraging?substrates?are?not?heavily?covered?by?snow?or?ice,?Mediterranean?birds?can?resist?an?extreme?cold?wave?[Current?Zoology?60?(4):?429-437,?2014].

• 关键词：

  寒潮 海鸟 林地 地中海 干燥 相对丰度 极端温度 气候记录

• 作者单位：

  Department of Biogeography and Global Change, Museo Nacional de Ciencias Naturales (CSIC), C/Jos6 Guti6rrez Abascal 2,28006 Madrid, Spain

• 基金项目：

  Acknowledgements This paper was funded by project CGL2008-02211/BOS of the Spanish Ministry of Education and Science. The authors thank the Navacerrada Council for the authorizations to access the study area. A previous draft of the manuscript was revised by Oscar Gordo. We also thank C. Jasinski for improving the English of the manuscript.

• 来源期刊：

  动物学报(英文版)

• 年，卷(期)：

  2014004